#!/bin/sh

# run from directory where this script is
cd `dirname $0`
EXAMPLE_DIR=`pwd`

# check whether echo has the -e option
if test "`echo -e`" = "-e" ; then ECHO=echo ; else ECHO="echo -e" ; fi

$ECHO
$ECHO "$EXAMPLE_DIR : starting"
$ECHO
$ECHO "This example shows how to use the FFTTXlib library to perform"
$ECHO "3D Fourier transform in a scalar and parallel setup."

# set the needed environment variables
. ../../environment_variables

# required executables and pseudopotentials
BIN_LIST="fft_test0.x fft_test.x"

BIN_DIR="../../"

$ECHO
$ECHO "  executables directory: $BIN_DIR"
$ECHO "  checking that needed directories and files exist...\c"

# check for directories
for DIR in "$BIN_DIR" ; do
    if test ! -d $DIR ; then
        $ECHO
        $ECHO "ERROR: $DIR not existent or not a directory"
        $ECHO "Aborting"
        exit 1
    fi
done
for DIR in "$TMP_DIR" "$EXAMPLE_DIR/results" ; do
    if test ! -d $DIR ; then
        mkdir $DIR
    fi
done
cd $EXAMPLE_DIR/results

# check for executables
for FILE in $BIN_LIST ; do
    if test ! -x $BIN_DIR/$FILE ; then
        $ECHO
        $ECHO "ERROR: $BIN_DIR/$FILE not existent or not executable"
        $ECHO "Aborting"
        exit 1
    fi
done

$ECHO " done"

# how to run executables
PW_COMMAND="$PARA_PREFIX $BIN_DIR/fft_test0.x $PARA_POSTFIX"
$ECHO "$PARA_PREFIX $BIN_DIR/fft_test0.x   >  fft_test0.out "
$PARA_PREFIX $BIN_DIR/fft_test0.x   >  fft_test0.out

$ECHO
$ECHO "$EXAMPLE_DIR : done"
